Solid State Communications最新文献

{"title":"Influence of synthesis parameters on surface area and pore structure of reduced graphene oxide(rGO): Insight via QSDFT analysis","authors":"Pooja Sharma ,&nbsp;Anurag Choudhary ,&nbsp;Vikash Chandra Janu ,&nbsp;Aruna Yadav ,&nbsp;Deepesh Patidar ,&nbsp;Prashant Vasistha","doi":"10.1016/j.ssc.2025.116186","DOIUrl":"10.1016/j.ssc.2025.116186","url":null,"abstract":"<div><div>Herein, the influence of synthesis conditions on the specific surface area (SSA) of reduced graphene oxide (rGO) has been investigated along with pore size distribution(PSD). A series of graphene oxide (GO) samples has been prepared under different conditions and subsequently reduced by L-ascorbic acid. BET (Brunauer-Emmett-Teller) analysis showed surface area varying from 195 to 433 m²g^-1 depending on synthesis parameters. For comparison, rGO has also been prepared by adopting the conventional Hummer's method using graphite flakes and exfoliated graphite as the precursors. It has been found that exfoliating graphite at first stage plays a key role in enhancing surface area in rGO. The pore size distribution of rGO has been assessed by implementing quenched solid density functional theory (QSDFT), which showed the presence of micropores with pore width of 0.78–0.92 nm (mode) and mesopores width ranging from 3 to 25 nm. The study demonstrates that reaction conditions adopted during GO synthesis significantly affect the surface area in rGO obtained after reduction. It paves the way towards synthesizing high surface area rGO by minimizing usage of oxidants and ultrasonication, along with pore size estimation using QSDFT.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116186"},"PeriodicalIF":2.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic performance and antibacterial activity of dumbbell-shaped ZnO with flower-like tips synthesized via the hydrothermal method","authors":"S. Gálvez-Barbosa ,&nbsp;Luis A. Bretado ,&nbsp;Y. Salinas-Delgado ,&nbsp;Luis A. González","doi":"10.1016/j.ssc.2025.116191","DOIUrl":"10.1016/j.ssc.2025.116191","url":null,"abstract":"<div><div>In this work, ZnO particles with a unique dumbbell-shaped morphology with flower-like tips (DF-ZnO) were synthesized via the hydrothermal method. These particles measured 13.83 ± 2.35 μm in length and had tip diameters of 2.98 ± 0.89 μm. The DF-ZnO powders exhibited a hexagonal crystalline structure, as confirmed by XRD and Raman spectroscopy analyses. In addition to good stability and reusability, the DF-ZnO powders exhibited 88 % efficiency in the photocatalytic degradation of Eriochrome Black T (EBT) after 120 min of exposure to natural sunlight. Moreover, these particles exhibited antibacterial properties, with inhibition zones of 20 and 10 mm against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>, respectively.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116191"},"PeriodicalIF":2.4,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-tunable superconductivity in 2D materials","authors":"Farshad Azizi","doi":"10.1016/j.ssc.2025.116180","DOIUrl":"10.1016/j.ssc.2025.116180","url":null,"abstract":"<div><div>We develop a unified theoretical framework to investigate strain-tunable superconductivity in 2D materials, extending the Bardeen–Cooper–Schrieffer (BCS) formalism with strain-dependent pairing interactions, density of states (DOS), and spin–orbit coupling (SOC). Tailored to hexagonal lattices like graphene and transition metal dichalcogenides (TMDs), our model integrates tensor strain effects, band flattening, and SOC to derive analytical expressions for the superconducting gap (<span><math><mrow><mi>Δ</mi><mrow><mo>(</mo><mi>ϵ</mi><mo>)</mo></mrow></mrow></math></span>) and critical temperature (<span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub><mrow><mo>(</mo><mi>ϵ</mi><mo>)</mo></mrow></mrow></math></span>). Unlike previous models, it captures the interplay of anisotropy and lattice-specific effects, predicting a non-monotonic enhancement of superconductivity up to 5% strain, with peak <span><math><mrow><mi>Δ</mi><mo>≈</mo><mn>1</mn><mo>.</mo><mn>197</mn><mspace></mspace><mtext>meV</mtext></mrow></math></span> and <span><math><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>≈</mo><mn>3</mn><mo>.</mo><mn>16</mn><mspace></mspace><mtext>K</mtext></mrow></math></span> for MoS<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>, consistent with experimental data. Supported by DFT and self-consistent simulations, our framework guides strain-engineered quantum devices.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116180"},"PeriodicalIF":2.4,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energetics and pathways of proton transport in CaFeO3: A first-principles study","authors":"Yingjie Lv ,&nbsp;Kangkai Yan ,&nbsp;Nannan Han ,&nbsp;Jiahao Yang ,&nbsp;Yu Chen ,&nbsp;Ying Liang ,&nbsp;Tianxing Ma ,&nbsp;Jiajun Linghu ,&nbsp;Zhi-peng Li","doi":"10.1016/j.ssc.2025.116188","DOIUrl":"10.1016/j.ssc.2025.116188","url":null,"abstract":"<div><div>Proton-conducting solid oxide fuel cells (P-SOFC) represent one of the most promising energy conversion technologies due to their lower operating temperatures and reduced costs. However, existing electrolytes struggle to achieve high conductivity. To address this limitation, a novel hydrogen incorporation strategy leveraging the multivalent characteristics of transition metals has recently been reported. As one of the candidate perovskites with transition metal on the B site, CaFeO₃ shows potential for the electrolyte of P-SOFC. Herein, we systematically investigate the properties of CaFeO₃ by first-principles calculation and find that it possesses ferromagnetic ground state, energetic and chemical stability, as well as high-concentration hydrogen incorporation due to the charge transfer from H to Fe. The phase HCaFeO₃ is thermodynamically stable with semiconductor nature which can suppress electronic conductivity. Seven possible proton migration pathways involving proton transfer and rotation are subsequently identified and rigorously compared, enabling the design of a viable long-range proton migration trajectory with maximum energy barrier of 0.35 eV. This maximum barrier belongs to the proton rotation process, contradicting the conventional understanding that proton transfer is the rate-limiting step. Meanwhile, the magnitude of lattice distortion is identified as the primary factor governing proton migration energy barriers. Our findings not only demonstrate the significant potential of CaFeO₃ as a high-performance P-SOFC electrolyte, but also provide critical design principles for next-generation electrolyte materials for P-SOFC applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116188"},"PeriodicalIF":2.4,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, electronic, and optical properties of polymorphic phases of the LiBaPO4 compound","authors":"Gilvan J. Piropo ,&nbsp;Carlos H.P. Silva ,&nbsp;Marcos V.dos S. Rezende ,&nbsp;Adilmo F. Lima ,&nbsp;Milan V. Lalic","doi":"10.1016/j.ssc.2025.116193","DOIUrl":"10.1016/j.ssc.2025.116193","url":null,"abstract":"<div><div>In this work, we present a comprehensive first-principles study of the structural, electronic, and optical properties of LiBaPO₄ in its four experimentally proposed crystalline phases: <em>Cc</em>, P3₁c, P6₃, and Pmcn. An improved electronic structure description for the low-temperature <em>Cc</em> and P3₁c phases is achieved using the mBJ exchange potential, revealing similar wide bandgaps (∼7.6 eV) in both phases. This result contrasts with earlier reports and is consistent with the similar Ba–O coordination environments in these phases. For the high-temperature phases, we predict the atomic positions for the P6₃ and Pmcn structures. However, due to convergence issues and structural inconsistencies with Pmcn, we propose that the correct space group is <em>Pnma</em>, which yields results in better agreement with experimental lattice parameters. Analysis of bond lengths, coordination numbers, and bandgap values supports a sequence of displacive phase transitions among the <em>Cc</em>, P3₁c, and P6₃ phases, as all three share similar local atomic environments and electronic structures. In contrast, the transition from P6₃ to <em>Pnma</em> is characterized as reconstructive, evidenced by a change in Li coordination from tetrahedral to hepta-coordinated, significant alterations in Ba–O bond lengths, and a slight reduction in bandgap. Additionally, we calculated the optical absorption and reflectivity spectra for all four phases, providing theoretical guidance for future experimental investigations.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116193"},"PeriodicalIF":2.4,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Waste battery-derived GO/mesoporous TiO2 nanocomposites for visible-light photocatalytic degradation of crystal violet","authors":"Md Amran Hossen Suvo ,&nbsp;Chowdhury Raiyath ,&nbsp;Samia I. Liba ,&nbsp;Suptajoy Barua ,&nbsp;Mahabub Alam Bhuiyan","doi":"10.1016/j.ssc.2025.116190","DOIUrl":"10.1016/j.ssc.2025.116190","url":null,"abstract":"<div><div>The current work presents a facile and viable synthesis of anisotropic spindle shape mesoporous TiO₂ (Meso-TiO₂) nanoparticles by solvothermal method and their decoration on waste battery derived graphene oxide (GO) nanosheets by a waste to wealth approach to produce GO/Meso-TiO₂ nanocomposite, an efficient sunlight driven photocatalyst for the degradation of crystal violet (CV) dye. The GO/Meso-TiO₂ composites exhibit a pure anatase phase tetragonal crystal structure, reduced agglomeration, several carbon and oxygen containing functional groups, narrowed band gap (2.81 eV), and strong visible-light absorption. Owing to these features, GO/Meso-TiO₂ composites demonstrate enhanced photocatalytic degradation (87.14 %) of crystal violet (CV) dye under 100 min of sunlight irradiation, outperforming conventional TiO₂ photocatalyst. The GO/Meso-TiO₂ composites achieve degradation efficiencies of 87.14 % and 98.58 % at pH 7 and 10, respectively. Scavengers test reveal the dominating role of hydroxyl (∙OH) radicals in the CV dye degradation process. The GO/Meso-TiO₂ catalysts also demonstrate stability, retaining ∼81 % efficiency after four cycles. These findings highlight the novel integration of waste-derived GO with Meso-TiO₂ for efficient, reusable, sunlight-driven wastewater treatment.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116190"},"PeriodicalIF":2.4,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic-field and geometric structure effects on the linear and nonlinear optical properties of multilayered spherical quantum dots","authors":"A. Fakkahi ,&nbsp;H. Azmi ,&nbsp;H. Dakhlaoui ,&nbsp;M. Jaouane ,&nbsp;A. Sali ,&nbsp;A. Ed-Dahmouny ,&nbsp;R. Arraoui ,&nbsp;K. El-Bakkari ,&nbsp;J. El-Hamouchi ,&nbsp;O. Benhammou","doi":"10.1016/j.ssc.2025.116178","DOIUrl":"10.1016/j.ssc.2025.116178","url":null,"abstract":"<div><div>This study investigates the optical properties of multilayered spherical quantum dots (MSQDs) with a focus on the influence of layer dimensions and external magnetic field (B-field). Utilizing the finite element method, we systematically analyze the effects on linear, third-order nonlinear, and total optical absorption coefficients, as well as refractive index variations. The results demonstrate a strong dependence of optical responses on the structural parameters of the quantum dots. Specifically, even minor variations in layer thickness lead to significant changes in both linear and third-order nonlinear absorption, highlighting the pronounced role of quantum confinement. Additionally, the presence of a magnetic field is shown to substantially modulate the optical characteristics, further emphasizing its critical role in tuning the optoelectronic behavior of MSQDs. This work provides valuable insights into the interplay between geometric structure and external fields, offering a foundation for the design of advanced nanophotonic devices with tailored optical functionalities.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116178"},"PeriodicalIF":2.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Ho doping on the structural and magnetic properties in Sr2-xHoxFeMoO6 double perovskite","authors":"Changcai Chen ,&nbsp;Yuan Yuan ,&nbsp;Chaoxiang Jin ,&nbsp;Munan Yang ,&nbsp;Tianyong Zhang","doi":"10.1016/j.ssc.2025.116187","DOIUrl":"10.1016/j.ssc.2025.116187","url":null,"abstract":"<div><div>We investigated the influence of Ho doping on the structural and magnetic properties in double perovskite oxide Sr_2-<em>x</em>Ho_<em>x</em>FeMoO₆ (SHFMO, x = 0, 0.05, 0.1 and 0.2). All samples, prepared via conventional solid state reaction method, were confirmed by X-ray diffraction analysis to crystallize in the I4/m space group. Analysis of the superlattice peak (I₀₁₁) relative to the main peaks (I₀₂₀+I₁₁₂) revealed that antisite defects increase with Ho doping, attributed to a reduction in Fe/Mo ordering. Magnetic phase transition temperatures (<em>T</em>_c), determined from <em>M</em>-<em>T</em> curves, decrease progressively with increasing x: 375 K(x = 0), 326 K(x = 0.05), 313 K(x = 0.1), and 280 K(x = 0.2). The Arrot plots (<em>H</em>/<em>M</em>–<em>M</em>²) indicate that the magnetic transition is of second order. Under an applied magnetic field of 5 T, the maximum magnetic entropy change (|ΔS_M|) values for SHFMO samples are 0.75(x = 0), 0.89(x = 0.05), 0.93(x = 0.1) and 0.77 J kg⁻¹ K⁻¹(x = 0.2). Notably, Sr_1.9Ho_0.1FeMoO₆ exhibits the highest relative cooling power (RCP) of 37.5 J/kg. There results demonstrate that Ho doping is an effective method for tuning the structural and magnetic properties of double perovskite systems, with the x = 0.1 composition showing particular promise.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116187"},"PeriodicalIF":2.4,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning incorporating stability features and Bayesian Optimization for perovskite structure prediction","authors":"Pan Xu,&nbsp;Yang Liu,&nbsp;Li Song","doi":"10.1016/j.ssc.2025.116174","DOIUrl":"10.1016/j.ssc.2025.116174","url":null,"abstract":"<div><div>In recent years, machine learning has been extensively applied in materials science research due to its outstanding capabilities in data processing and pattern recognition. This study aims to address the classification problem of perovskite crystal structures by introducing BO (Bayesian Optimization) for parameter tuning of CatBoost (Categorical Boosting) for the first time. Additionally, the stability of perovskites is innovatively incorporated as one of the key features alongside traditional features such as Electronegativity and Bond Length. This approach enables precise classification of perovskite structures into cubic, tetragonal, orthorhombic, and rhombohedral phases. Data standardization is performed using Robust Scaling, the class imbalance in the dataset was addressed using the ADASYN ( Adaptive Synthetic Sampling) during feature selection and the <span>class_weight</span> of the CatBoost during model training.Feature selection is conducted using RFECV (Recursive Feature Elimination with Cross-Validation). A comparative analysis of models based on the processed dataset demonstrates that the BO_CatBoost (Bayesian Optimized CatBoost) model, which includes the stability feature, achieves a classification accuracy of up to 86.89%, significantly outperforming traditional machine learning models.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116174"},"PeriodicalIF":2.4,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the photovoltaic potential of lead-free CsSnCl3 perovskite via Al/In doping: A combined DFT and SCAPS-1D study","authors":"Mekuria Tsegaye Alemu ,&nbsp;Dereje Fufa Hirpa ,&nbsp;Kingsley Onyebuchi Obodo ,&nbsp;Chernet Amente Geffe","doi":"10.1016/j.ssc.2025.116179","DOIUrl":"10.1016/j.ssc.2025.116179","url":null,"abstract":"<div><div>The pursuit of high-efficiency, environmentally friendly photovoltaics has intensified the search for lead-free perovskite solar cells (PSCs). This study comprehensively investigates the potential of inorganic cesium tin chloride (CsSnCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>) as a stable, non-toxic absorber material via a combined computational approach. To address the inherent instability of Sn<span><math><msup><mrow></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math></span>, we propose strategic doping with aluminum (Al) and indium (In). First-principles density functional theory (DFT) calculations reveal that doping successfully widens the band gap from 0.95 eV to 1.63 eV (Al) and 1.95 eV (In), induces beneficial p-type conductivity, enhances optical absorption, and improves structural stability. Subsequently, device-level performance is evaluated through SCAPS-1D simulations of pristine CsSnCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> in three novel heterojunction architectures: FTO/ZnO/CsSnCl3/Spiro-OMeTAD/Au, FTO/C<span><math><mrow><mn>60</mn></mrow></math></span>/CsSnCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>/CuSCN/Au, and FTO/WS<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>/CsSnCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>/P3HT/Au. These configurations yield high power conversion efficiencies (PCEs) of 24.89%, 24.53%, and 23.03%, respectively, at an 800 nm absorber thickness. The ZnO/Spiro-OMeTAD structure achieves superior performance due to optimal band alignment and minimized recombination losses. Further optimization of the absorber thickness boosts the PCE to 25.00% for the leading device. All configurations exhibit exceptional quantum efficiency, exceeding 99%. Our findings not only validate doped CsSnCl<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> as a highly promising lead-free absorber but also underscore the critical importance of synergistic materials engineering and device architecture optimization in developing efficient and sustainable PSCs.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"406 ","pages":"Article 116179"},"PeriodicalIF":2.4,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145264650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}